Solid tire for vehicles and the like.



D. MAGGIORA.

SOLID TIRE EOE VEHICLES AND THE LIKE.

APPLICATION FILED JUNE 29,1912.

1,084,866, Patented Jan.20,1914.

.712 ven for e merz'o Maggior@ 23] l Q nhl A Horn ejww niaiviiifritioMAGGIORA, or LONDON, ENGLAND.

SOLID TIRE FOR VEHICLES AND THE LIKE.

insiste.

Specification of Letters Patent.

Application filed June 29, 1912.

Patented Jan. 20', 1914.

Serial No. 706,667.

To allai/01m t may concern .f A

Be it known that I,DEME'riiio MaGGiona, a citizen of the Kingdom ofItaly, and resident of 153 lVarwick street, Belgravia, London, England,have invented certain new and useful Improvements in Solid Tires forVehicles and the like, of which the follow ing is a specification, suchwill enable others skilled in the art to which it appertains to make anduse the saine.

This invention relates to an improved elastic tire for the wheels ofyehicles, of the class in which india rubber under permanent strain isemployed, the invention consisting in both the improved tire and themethod of making same.

In carrying out my invention I employ india rubber of good quality or asuitable substitute therefor, or any convenient coinbination of suchmaterials, and my tire may be broadly described as consisting of a core,solid or otherwise, and preferably of highly resilient material aroundwhich one or more tubes of .rubber or other highly resilient inaterialai'e expanded so as to be in a state of very considerable tension. Thesetubes may be in segments or not, as desired, but are already in the formof a tube before they are expanded over the core. My improved tire isthus differentiated from that type of tire in which a core has rubberunder tension wound around it, and also lfrom that type in which anelastic tube has elastic material 1n a fluid state pumped into it, thesaid -material setting after it is in the tube.

As an example, a tire made according to my invention and suitable for amotor car, may comprise a core of solid india rubbei' which under normalconditions has a diameter of say two inches, and over which a tube ofindia rubber having normal diameters of say one and five eighths of aninch outside and five eigliths of an inch inside is expanded, a secondtube of the same size being put over the first and a third of the samesize being put over the second with the obvious result that the :firsttube will be expanded and at the same time will exert pressure upon andcompress the core the second tube will also be expanded to a greaterextent than the first and exert great pressure upon the first tube andthe core, while the third tube will be expanded still more than thesecond and will exert a still greater pressure upon the second tube, thefirst tube and also the core, resulting in a cylindrical body of rubberin which enormous amount of energy isV stored' with the result that thesaid body is extremely resilient. l

The method of placing the tubesover the core or over each other maymvaryas riequired and the bodyformcd be of any convenient length andaspreviolfislye stated, may be in segments and obviously the tubes may beof ditl'erent measurements if desired, but must be of dimensions and iffsuch' a state oftension as to store up a large amount of energy whichnecessarily varies according to the class of tire and its object. Thisbody forms the main part of the tire and may be fitted with any suitablecover or tread and provided with any desired means for attaching to thewheels of the vehicles.

I will now describe my invention with reference to the accompanyingdrawings, in which Figure 1 shows parts of the three main elements of atire, a core a, a tubular segment Y) and a second tubular segment c.Fig. 2 shows these three parts assembled,

the tube b having been placed over the core a and the tube c over thetube b with the result that the coi'e is greatly compressed and thetubes expanded. Fig. 3 is a sectional view of part of a tire showing acore a with three tubes b, c, (l, arranged around it, and said tubesbeing in segments and arranged in step-like manner. Fig. l shows pait ofa tire with tubes 7) and c in section and illustrates the compression ofthe .-ore a. Figs. 3 and lare somewhat exaggerated. Fia. 5 shows thetube in full lines before stretching and in dotted lilies twicestretched, while Fig. (i shows a tii'e formed according to my invention,the ends being joined together in any convenient manner; or they maysimply butt against cach other without being fastened if inside a cover.

The tire may consist of two or more segments of core held together bythe outer tread or cover. Any suitable form of and any convenient meansof fixing may be employed.

If it desired to use a lubricant such as rubber solution or glycerinbetween the parts for the purpose of facilitating the movement of oneupon the other in arranging the said parts or the manipulation of thetubes employed, the said lubricant may be used but I wish it to beclearly understood that any suitable means may be employed forstretching the tubes over the core or over each other and the tire mustnot be Confused With that tire in which energy is obtained by Winding astrip of rubber over itself, or a core.

l. An elastic tire comprising an elastic core having a series of shorttubes expanded and imposed. thereon throughout the length of the coreand a plurality of series of short tubes expanded and superimposed inlayers so that the outer series of tubes compress the inner series oftubesand the said core, the

yends of the tubes in any layer being in staggered relation to those inadj aeent layers.

2. Any elastic tire comprising a solid elastic core having a seamlesstube expanded and imposed thereon throughout the length of the core sothat the core is compressed by the tube and thel tube is tensioned bythe core.

3. An elastic tire comprising a solid elastic core having a plurality ofseamless tubes expanded and imposed thereon one tube over the otherthroughout the length of the core so that the tubes compress the coreand are themselves tensioned by the core.

In Witness whereof I have hereunto set my hand in lpresence of tWoWitnesses.

DEMETRIO MAGGIORA.

Witnesses HENRY FAIRBROTHER, WALTER CHowLEs.

Copies o this patent may be obtained for ve cents each, by addressingthe Commissioner of Tatentm. Washington, D. C.

